In lab, suppose that we used 0.7885 grams ofCalcium carbonate (MW 100.09) dissolved in 250mL and for a 50mL aliquot it tookexactly 43.23 mL of EDTA to titrate.Our 5.000 gram unknown sample was dissolved in 250ml and a 50 ml aliquot was usedto determine the unknown concentration. If it took 33.45 mL of EDTA to get to the pointof colour change, what is the %Ca (MW 40.078) in the original sample?

In lab, suppose that we used 0.7885 grams ofCalcium carbonate (MW 100.09) dissolved in 250mL and for a 50mL aliquot it tookexactly 43.23 mL of EDTA to titrate.Our 5.000 gram unknown sample was dissolved in 250ml and a 50 ml aliquot was usedto determine the unknown concentration. If it took 33.45 mL of EDTA to get to the pointof colour change, what is the %Ca (MW 40.078) in the original sample?

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter12: Spectrochemical Methods

Section: Chapter Questions

Problem 15P

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